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Finding the Fourth Proportional to 34,168.40, 51,212.40 and 15,426.56

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Solution

The fourth proportional to 34,168.40, 51,212.40 and 15,426.56 is: 23,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,168.40 : 51,212.40 = 15,426.56 : x
  2. Step 2: Convert to fraction form
    34,168.40/51,212.40 = 15,426.56/x
  3. Step 3: Cross multiply
    34,168.40x = 51,212.40 × 15,426.56
  4. Step 4: Simplify right side
    34,168.40x = 790,031,161.34
  5. Step 5: Solve for x
    x = 790,031,161.34/34,168.40
  6. Step 6: Final answer
    x = 23,121.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.